1. use newton's first law of motion to explain how wearing a seat belt in a moving car could prevent injury

2. a skydiver prepares to jump out of a plane. explain how gravity and air resistance will affect the motion of the sky diver before and after he or she opens the parachute

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.